Biology · Science General

Diversity in Living Organisms

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The diversity in living organisms deals with the classification of life forms into various kingdoms and phyla. This topic covers specific traits of bacteria, animal body cavities, and structural adaptations for survival. These fundamentals are crucial for biology sections in medical entrance and state board exams.

Animal phyla characteristicsBacteria and flagellaBiological adaptationsKingdom Animalia classificationBody cavity typesExtinct organism subphylaJawless animals identification

Diversity in Living Organisms Questions

Multiple choice biology diversity in living world characteristics of annelida and arthropoda characteristics of platyhelminthes and aschelminthes basis of classification in animals

Phylum annelida resembles mollusca in embryonic features because both have __________________.

  1. Spiral cleavage and mesoderm formation

  2. Identical conspicuous segmentation in body, muscles

    and nervous system

  3. Meroblastic cleavage and ectoderm formation

  4. Special type of mouth parts
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Annelids and mollusks are both protostomes, meaning they share developmental characteristics such as spiral cleavage and the formation of the mesoderm from specific blastomeres.

Multiple choice zoology adaptation terrestrial adaptation in animals terrestrial adaptations animal adaptations terrestrial adaptations in plants adaptation in terrestrial plants

 Deer has _______ to hear movements of predators.

  1. Long ears

  2. Short ears

  3. Long nose

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
 A deer needs to know about the presence of predators ( animals like lion that make it their prey ) in order to run away from them and not become their prey. It has long ears to hear movements of predators.
Multiple choice biology biological diversity species, communities and ecosystems kingdom fungi monera, protista, fungi

Roundworms belong to the phyla

  1. Nematoda

  2. Porifera

  3. Platyhelminthes

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Nematodes are roundworms, named as such because they are round in cross-section. They belong to phylum Nematoda. Nematodes possess digestive, nervous, excretory, and reproductive systems, but lack a discrete circulatory or respiratory system.
So, the correct answer is 'Nematoda'.
Multiple choice transgenic organisms biotechnology and its applications biotechnology and its application biology

In which of the following prokaryote organism the voluminous genetical works have been done?

  1. Drosophila

  2. Escherichia coli

  3. TMV

  4. House fly
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
  • Escherichia coli is considered as a model organism. The organism can be cultured and maintained very easily in the laboratory conditions. 
  • The genome of the prokaryotic bacteria has been mapped and the details about all the genes and the products have been known. 
  • This makes it easy to modify or alter and gene, introduce a new gene or mutate the gene and study the effect. The organism can be easily studied as the growth rate is high. 
  • So, many works related to genetics have been performed using this bacterium.
  • Thus, the correct answer is option B. 
Multiple choice biology caskets of life observation of cells observing cells cell as structural and functional unit

Onion cells and cheek cells are the examples of prokaryotic cell.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Onion cell is a plant cell with a cell wall and a large vacuole. On the other hand, human cheek cell is an animal cell with a prominent nucleus. Onion cells are brick-like in shape while human cheek cells are rounded. Human cheek cells do not have a cell wall or a large vacuole. Onion cell is an example of plant eukaryotic cell and cheek cell is an example of an animal eukaryotic cell.

So, the correct answer is 'False'.

Multiple choice biology caskets of life observation of cells observing cells cell as structural and functional unit

How is a bacterial cell different from an onion peel cell?

  1. Bacterial cell- prokaryote, onion peel cell- eukaryote

  2. Onion peel cell- prokaryote, bacterial cell- eukaryote

  3. Bacterial cell- contains membranous organelles, onion peel cell- no membranous organelle

  4. None of these
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bacterial cells are primitive cells hence, called as prokaryotic cells. They do not possess membrane bound organelles as mitochondria, lysosomes, etc. They also do not have well-defined membrane bound nucleus. 
Onion peel cell is an eukaryotic cell with well-defined membrane bound nucleus, membrane bound organelles as mitochondria, vacuole, etc. 

Multiple choice biology micro - organism useful actions of algae introduction to algae algae

Agar is obtained from which of the following alga?

  1. $Sargassum$
  2. $Spirogyra$
  3. $Gelidium$
  4. $Chondrus$ $crispus$
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Agar is a jelly-like substance, obtained from algae and discovered in the late 1650s or early 1660s. Agar is derived from the polysaccharide agarose, which forms the supporting structure in the cell walls of certain species of algae, and which is released on boiling. These algae are known as agarophytes and belong to the Rhodophyta (red algae) phylum. Agar is actually the resulting mixture of two components: the linear polysaccharide agarose, and a heterogeneous mixture of smaller molecules called agaropectin.The gelling agent in agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae, primarily from the genera Gelidium and Gracilaria. For commercial purposes, it is derived primarily from Gelidium amansii. In chemical terms, agar is a polymer made up of subunits of the sugar galactose.

Multiple choice biology micro - organism useful actions of algae introduction to algae algae

An alga, very rich in protein, is

  1. Nostoc

  2. Ulothrix

  3. Chlorella

  4. Spirogyra
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Chlorella is an alga with extremely important health benefits. It contains nearly 50% of proteins. It also contains certain essential amino acids. But because of its hard cell wall, it cannot be digested easily. So, it is available in the form of food supplements as tablets, capsules etc.

So, option C "Chlorella" is the correct answer.

Multiple choice biology micro - organism useful actions of algae introduction to algae algae

A thalloid red algae used for commercial production of agar-agar is

  1. Gelidium

  2. Cladophora

  3. Chlorella

  4. Corallina
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Agar or agar-agar is a jelly-like substance, obtained from algae. The gelling agent in agar is an unbranched polysaccharide obtained from the cell walls of some species of red algae, primarily from the genera Gelidium and Gracilaria. For commercial purposes, it is derived primarily from Gelidium amansii. In chemical terms, agar is a polymer made up of subunits of the sugar galactose.

Multiple choice evs snakes a snake charmer's story snakes and snake charmers uses of animals

Snakes dance to the tune of snake charmer because

  1. They are charmed by music.

  2. Snake charmers flute is very melodious.

  3. They are trained liked other pets.

  4. They change position with the change in position of the flute.
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

  • The snakes have a poorly developed sense of hearing. 
  • So, it cannot hear the snake charmer's tune but moves along with the hands and other movements made by the snake charmer.

    Hence, the correct option is D.


Multiple choice evs snakes a snake charmer's story snakes and snake charmers uses of animals

Snakes are not found in Antarctica, Iceland, Ireland, Greenland and New Zealand because 

  1. They are cold blooded

  2. They are carnivores

  3. They have poisonous fangs

  4. None of the above
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Many carnivores are found in extremely cold areas.

Fangs are not affected by external temperatures hence they aren't contributing in the habitats of snakes.
They are cold blood or their inability to maintain a body temperature limits their existence to some areas having warm climates as they will not be able to survive in such extreme cold.
So the correct answer is 'They are cold blooded'.

Multiple choice evs snakes a snake charmer's story snakes and snake charmers uses of animals

Snakes cannot shed their skin.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The given statement is false. The molting of the skin occurs regularly in snakes. This is when old skin is outgrown. It is called shedding or ecdysis. Snakes will rub against rough surfaces to shed their skin. A shed skin is much longer than the snake that shed it, as the skin covers the top and bottom of each scale. 

Multiple choice evs snakes a snake charmer's story snakes and snake charmers uses of animals

When tail is cylindrical and ventral scales do not extend the entire width of the belly, the snake is 

  1. Non-Poisonous

  2. Definitely Poisonous

  3. deadly Poisonous

  4. Either Poisonous or Non-Poisonous
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The most important differences between poisonous and non poisonous snakes include :

1. Poisnous snakes have large ventral scales covering the entire extent of the belly. Non-poisnous snakes have smaller scales absent over belly.
2. Poisnous snakes have a compressed tail while it is not compressed in non-poisnous snakes.
3. Fangs of poisonous snakes are hollow like hypodermic needle while they are short and solid in non-poisonous snakes.
Looking at the given characteristics, the correct option is 'Non-Poisnous'.